diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
new file mode 100644
index 0000000..e482efb
--- /dev/null
+++ b/.github/workflows/main.yml
@@ -0,0 +1,30 @@
+
+name: Test
+on: [push, pull_request]
+jobs:
+  test:
+    # matrix strategy from: https://github.com/mvdan/github-actions-golang/blob/master/.github/workflows/test.yml
+    strategy:
+      matrix:
+        go-version: [1.13.x, 1.14.x]
+        platform: [ubuntu-latest]
+    runs-on: ${{ matrix.platform }}
+    steps:
+    - name: Install Go
+      uses: actions/setup-go@v1
+      with:
+        go-version: ${{ matrix.go-version }}
+    - name: Install Nodejs
+      uses: actions/setup-node@v1
+      with:
+        go-version: 10.x
+    - name: Install circom
+      run: npm install -g circom
+    - name: Install snarkjs
+      run: npm install -g snarkjs
+    - name: Checkout code
+      uses: actions/checkout@v2
+    - name: Compile circuits and execute Go tests
+      run: |
+        sh ./compile-circuits.sh
+        go test ./...
diff --git a/compile-circuits.sh b/compile-circuits.sh
index dbc903a..405534a 100755
--- a/compile-circuits.sh
+++ b/compile-circuits.sh
@@ -6,6 +6,7 @@ echo "compiling circuit"
 circom circuit.circom -r1cs --wasm --sym
 echo "generating setup"
 snarkjs setup
+sed -i 's/null/["0","0","0"]/g' proving_key.json
 echo "calculating witness"
 snarkjs calculatewitness --wasm circuit.wasm --input input.json --witness witness.json
 
@@ -15,5 +16,6 @@ echo "compiling circuit"
 circom circuit.circom -r1cs --wasm --sym
 echo "generating setup"
 snarkjs setup
+sed -i 's/null/["0","0","0"]/g' proving_key.json
 echo "calculating witness"
 snarkjs calculatewitness --wasm circuit.wasm --input input.json --witness witness.json